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Updated: Aug 9, 2026

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大脑的电路. 一个帕瓦胺阳性刺激视觉通路,可在小鼠中触发恐惧反应

Congping Shang1, Zhihui Liu2, Zijun Chen1

  • 1State Key Laboratory of Brain and Cognitive Sciences, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. University of Chinese Academy of Sciences, Beijing 100049, China.

Science (New York, N.Y.)
|June 27, 2015
PubMed
概括

科学家们在老鼠大脑中发现了特定的神经元,这些神经元可以检测到像迫在眉的物体这样的威胁. 激活这些神经元会触发类似恐惧和抑郁的行为,揭示了生存反应的关键神经回路.

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Functions of the Nervous System01:18

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The nervous system is responsible for coordinating and regulating the body's functions. It functions through three main processes: sensory, integrative, and motor processes. Sensory function involves the detection and transmission of information about internal and external stimuli from sensory receptors to the CNS. The CNS processes this information through an integrative function, where it interprets and makes decisions based on the incoming sensory information. Finally, the motor function...
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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...